题目内容
化简与计算:
(1)
-
+3
-
;
(2)(
-
)÷
+(1-
)2.
(1)
| 12 |
| 18 |
|
| 3 |
| 2 |
|
(2)(
| 18 |
| 24 |
| 6 |
| 3 |
(1)原式=2
-3
+3×
-
×
=2
-3
+
-
=
-
.
(2)原式=
÷
-
÷
+1-2
+3
=
-2+4-2
=2-
.
| 3 |
| 2 |
| 1 |
| 2 |
| 2 |
| 3 |
| 2 |
| 2 |
| 3 |
| 3 |
=2
| 3 |
| 2 |
| 3 |
| 2 |
| 2 |
| 3 |
=
| 3 |
| 3 |
| 2 |
| 2 |
(2)原式=
| 18 |
| 6 |
| 24 |
| 6 |
| 3 |
=
| 3 |
| 3 |
=2-
| 3 |
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